diff --git a/elfcpp/ChangeLog b/elfcpp/ChangeLog
index 200d0d4ee4..262c7f62d7 100644
--- a/elfcpp/ChangeLog
+++ b/elfcpp/ChangeLog
@@ -1,3 +1,7 @@
+2017-09-18  Nick Clifton  <nickc@redhat.com>
+
+	* dwarf.h (elfcpp): Add definition of DW_CFA_DUP.
+
 2017-08-29  Alan Modra  <amodra@gmail.com>
 
 	* elfcpp.h (DT_PPC_OPT): Define.